[Bug 67243] New: [ILK]igt/kms_render/gpu-blit randomly causes system hang

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=67243

          Priority: medium
            Bug ID: 67243
                CC: xunx.fang at intel.com, yangweix.shui at intel.com
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [ILK]igt/kms_render/gpu-blit randomly causes system
                    hang
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: huax.lu at intel.com
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 82900
  --> https://bugs.freedesktop.org/attachment.cgi?id=82900&action=edit
dmesg

System Environment:
--------------------------
Platform:    Ironlake
Kernel:     (drm-intel-fixes)363202bb22467ea1de6dd284b78eff5cf517db66

Bug detailed description:
-----------------------------
It randomly causes system hang on Ironlake with drm-intel-fixes and
drm-intel-next-queued kernel.
It happens 1 in 5 runs.

output:
Beginning test gpu-blit with 1366x768 @ 60Hz / RGB565 on pipe A, encoder TMDS,
connector Embedded DisplayPort
Test gpu-blit with 1366x768 @ 60Hz / RGB565 on pipe A, encoder TMDS, connector
Embedded DisplayPort: PASSED
Beginning test gpu-blit with 1366x768 @ 60Hz / RGB888 on pipe A, encoder TMDS,
connector Embedded DisplayPort
Test gpu-blit with 1366x768 @ 60Hz / RGB888 on pipe A, encoder TMDS, connector
Embedded DisplayPort: SKIPPED
Beginning test gpu-blit with 1366x768 @ 60Hz / XRGB8888 on pipe A, encoder
TMDS, connector Embedded DisplayPort
Test gpu-blit with 1366x768 @ 60Hz / XRGB8888 on pipe A, encoder TMDS,
connector Embedded DisplayPort: PASSED
Beginning test gpu-blit with 1366x768 @ 60Hz / XRGB2101010 on pipe A, encoder
TMDS, connector Embedded DisplayPort
Test gpu-blit with 1366x768 @ 60Hz / XRGB2101010 on pipe A, encoder TMDS,
connector Embedded DisplayPort: PASSED
Beginning test gpu-blit with 1366x768 @ 60Hz / ARGB8888 on pipe A, encoder
TMDS, connector Embedded DisplayPort
Test gpu-blit with 1366x768 @ 60Hz / ARGB8888 on pipe A, encoder TMDS,
connector Embedded DisplayPort: PASSED
Beginning test gpu-blit with 1366x768 @ 40Hz / RGB565 on pipe A, encoder TMDS,
connector Embedded DisplayPort
Test gpu-blit with 1366x768 @ 40Hz / RGB565 on pipe A, encoder TMDS, connector
Embedded DisplayPort: PASSED
Beginning test gpu-blit with 1366x768 @ 40Hz / RGB888 on pipe A, encoder TMDS,
connector Embedded DisplayPort
Test gpu-blit with 1366x768 @ 40Hz / RGB888 on pipe A, encoder TMDS, connector
Embedded DisplayPort: SKIPPED
Beginning test gpu-blit with 1366x768 @ 40Hz / XRGB8888 on pipe A, encoder
TMDS, connector Embedded DisplayPort
Test gpu-blit with 1366x768 @ 40Hz / XRGB8888 on pipe A, encoder TMDS,
connector Embedded DisplayPort: PASSED
Beginning test gpu-blit with 1366x768 @ 40Hz / XRGB2101010 on pipe A, encoder
TMDS, connector Embedded DisplayPort
Test gpu-blit with 1366x768 @ 40Hz / XRGB2101010 on pipe A, encoder TMDS,
connector Embedded DisplayPort: PASSED
Beginning test gpu-blit with 1366x768 @ 40Hz / ARGB8888 on pipe A, encoder
TMDS, connector Embedded DisplayPort
Test gpu-blit with 1366x768 @ 40Hz / ARGB8888 on pipe A, encoder TMDS,
connector Embedded DisplayPort: PASSED


Reproduce steps:
----------------------------
1. run ./kms_render --run-subtest gpu-blit 5 cycles

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